The invention relates to a rhizosphere acid fertilizer for drip irrigation, which makes use of an existing drip irrigation technology and is applicable to calcareous-alkaline soil, and a preparation method thereof. The rhizosphere acid fertilizer comprises the following raw materials in parts by weight:...http://www.google.com.au/patents/CN104262057A?cl=en&utm_source=gb-gplus-sharePatent CN104262057A - Rhizosphere acid fertilizer and preparation method thereof

The invention relates to a rhizosphere acid fertilizer for drip irrigation, which makes use of an existing drip irrigation technology and is applicable to calcareous-alkaline soil, and a preparation method thereof. The rhizosphere acid fertilizer comprises the following raw materials in parts by weight: 20-28 parts of ammonium sulfate and 3,4-dimethylpyrazole phosphate (DMPP), wherein a ratio of ammonium sulfate to DMPP is 471.4: 1; 48-55 parts of urea phosphate; 15-20 parts of potassium chloride; and 2-5 parts of zinc sulfate heptahydrate. The preparation method comprises the following steps: separately grinding the above raw materials in proportion and sieving by using a 45-50-mesh sieve; uniformly mixing the sieved raw materials and grinding the materials for the second time, and sieving for the second time by using a 70-80-mesh sieve. The fertilizer disclosed by the invention is applicable to calcareous-alkaline soil, and is economical and practical; the fertilizer, under a drip irrigation condition, can locally acidifying rhizosphere soil, and can prevent a drip irrigation system from being blocked, improve a fertilizer utilization rate, particularly improve utilization rate of nitrogen phosphorus fertilizer and enhance crop output and quality.

[0003] 提高该类±壤养分有效性的一种途径是酸化±壤，前人研究证明，此类±壤上施入酸化剂如硫酸，可W提高±壤中养分的有效性，改善作物营养状况。 [0003] raise class ± soil nutrient availability is a way of ± soil acidification, previous studies have shown that the application of the acidifying agent such as sulfuric acid ± soil, can improve the effectiveness of W ± soil nutrients, improving crop nutritional status.但由于其具有较强的缓冲性，酸化作用持续时间较短，所需酸性物质的量大、成本高，难W在生产实践中应用。 But because it has a strong buffer, acidification of short duration, the required amount of acidic material, high cost, difficulty W applied in production practice.

[0008] 将上述配比的原料各自粉碎后过筛，过筛目数为45〜50目；再将过筛后的原料混匀后二次粉碎，并二次过筛即可，所述二次过筛目数为70〜80目。 [0008] The above raw materials in their crushed and sieved and sieved number of 45~50 mesh; then sieved material after mixing secondary pulverized and sieved to the second, the second times 70~80 mesh sieve mesh size.

[0009] 与现有技术相比，本发明的优点： [0009] Compared with the prior art, the advantages of the present invention:

[0011] 滴灌是一种实现±壤局部灌觀的节水灌觀技术，具有小灌量、高频次、近根灌觀的特点。 [0011] is an implementation of drip irrigation concept ± soil water-saving irrigation partial view of technology, with a small filling volume, high-frequency, near drench Outlook.本发明即借助滴灌的上述特点，将酸化剂配制成服料，通过滴灌少量、多次、近根、局部地投入±壤，实现酸化持续时间较长，酸化剂用量较少，降低±壤对服料的固定，局部地提高±壤养分的有效性，达到改善作物营养，提高服料利用率和±壤养分利用率，增产增效的目的。 With the above features of the present invention, namely, drip irrigation, acidifying agent formulated as clothing materials, through drip a few, several, near the root, locally into ± soil, to achieve acidification longer duration, less the amount of acidifying agent to reduce ± marina to fixed clothing materials and locally increase the effectiveness of ± soil nutrients, to improve nutrition and increase the utilization of clothing materials and ± soil nutrient utilization, increase production efficiency purposes.

[0012] 作物吸收NH/后会通过根系释放等摩尔数的H+到±壤中，在石灰性-碱性±壤中根系附近的该种酸性环境有利于被±壤固定的养分溶解而进入±壤溶液，有利于作物对± 壤养分的吸收。 After the [0012] crops absorb NH / root through the moles and releasing H + to ± soil in calcareous - Alkaline ± soil near the roots of the acidic environment conducive to a fixed dissolved nutrients into the soil is ± ± soil solution, is conducive to crop absorption of ± soil nutrients.但±壤中由于广泛存在硝化细菌，人为施入的NH/在一周内即转化为MV， 使根际酸化作用消失。 However, due to the widespread presence of ± soil denitrifying bacteria, artificially applied into the NH / in a week that is converted to MV, so that rhizosphere acidification disappear.加入硝化抑制剂可W抑制硝化作用强度，较长时间保持氮素W NH/ 形式存在，维持较长根际酸化时间。 Join nitrification inhibitors can inhibit the nitrification W intensity, longer retention of nitrogen W NH / form, to maintain a longer time rhizosphere acidification.本发明利用该一特点，在滴灌根际酸性服料中加入NH/ 的氮服并添加硝化抑制剂，使本专利生产的服料具有±壤局部酸化和根际酸化的双重特点，成为一种适合滴灌，具有显著酸化±壤效应的新型服料。 The present invention utilizes a characteristic that, in drip irrigation service rhizosphere acidic compound by adding NH / nitrogen clothing and nitrification inhibitor of the present patent production of clothing materials have ± soil acidification and partial characteristics of both rhizosphere acidification has become a for drip irrigation, new clothing materials have significant ± soil acidification effects.

[0021] 供试作物为棉花，在等养分用量的基准下，进行棉花对滴灌根际酸性服料和常规服料的响应试验，试验设置2个处理，3次重复。 [0021] The test for the cotton crop, the amount of other nutrients in the benchmarks for drip irrigation in cotton rhizosphere acidic clothing materials and conventional clothing materials response test, the test set up two treatment repeated three times.处理如下： Processing is as follows:

[0022] 处理1为常规施服作为对照组；处理2为施用本发明的滴灌根际酸性服。 [0022] 1 is a conventional treatment facilities serve as a control group; 2 for the treatment of the present invention is administered drip rhizosphere acidic clothing.

[0038] 从棉花产量及产量结构来看，滴灌根际酸性服通过增加单株铃数促进了棉花产量的增加，同时单铃重也略有增加，增产率达到了20. 1%。 [0038] From the cotton yield and yield structure, drip rhizosphere acidity served by increasing the number of boll promote increased cotton yield, boll weight at the same time also increased slightly, an increase rate of 20.1 percent.

[0039] 由此可见，本发明的滴灌根际酸性服料配合滴灌系统多次随水滴施能有效降低近根区±壤pH,改善±壤微区环境，提高±壤磯的有效性，显著提高棉花产量，且可行性强，效率高。 [0039] Thus, the drip of acidic rhizosphere clothing materials of the present invention with the drip irrigation system with water droplets repeatedly applied near the root zone can effectively reduce ± soil pH, soil micro ± improve the environment, improve the effectiveness of ± soil Angeles, significantly increase cotton production, and the feasibility, high efficiency.既能发挥滴灌局部酸化作用，又能发挥硫酸馈的生理酸化作用，同时满足植物生长所需的养分。 Both play a drip partial acidification, but also play a physiological role of sulfuric acid fed acidification, while meeting the nutrients required for plant growth.服料的全水溶性和酸性又可避免滴头堵塞现象，保证水服供应的均一，同时延长 Clothing materials fully water-soluble and acid and avoid clogging emitters to ensure a uniform supply of water service, while extending

滴灌系统的使用寿命，进一步降低单位成本。 The life of a drip system to further reduce unit costs.

[0046] 将上述配比的原料各自粉碎后过筛，过筛目数为50目；再将过筛后的原料混匀后二次粉碎，并二次过筛即可，所述二次过筛目数为70目。 [0046] The above raw materials in their crushed and sieved to 50 mesh sieve mesh; then sieved material after mixing secondary pulverized and sieved to the secondary, the secondary over number 70 mesh sieve.

[0049] 将上述配比的原料各自粉碎后过筛，过筛目数为45目；再将过筛后的原料混匀后二次粉碎，并二次过筛即可，所述二次过筛目数为70目。 [0049] The above raw materials in their crushed and sieved to 45 mesh sieve mesh; then sieved material after mixing secondary pulverized and sieved to the secondary, the secondary over number 70 mesh sieve.

[0052] 将上述配比的原料各自粉碎后过筛，过筛目数为48目；再将过筛后的原料混匀后二次粉碎，并二次过筛即可，所述二次过筛目数为80目。 [0052] The above raw materials in their crushed and sieved to 48 mesh sieve mesh; then sieved material after mixing secondary pulverized and sieved to the secondary, the secondary over number 80 mesh sieve.

[00巧]将上述配比的原料各自粉碎后过筛，过筛目数为50目；再将过筛后的原料混匀后二次粉碎，并二次过筛即可，所述二次过筛目数为80目。 [00 clever] raw materials in the above respective crushed and sieved to 50 mesh sieve number; raw material and then sifted twice after mixing crushed and sieved to the secondary, the secondary Number of mesh to 80 mesh.

[0058] 将上述配比的原料各自粉碎后过筛，过筛目数为50目；再将过筛后的原料混匀后二次粉碎，并二次过筛即可，所述二次过筛目数为70目。 [0058] The above raw materials in their crushed and sieved to 50 mesh sieve mesh; then sieved material after mixing secondary pulverized and sieved to the secondary, the secondary over number 70 mesh sieve.